<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        #left{
            float: left;
            width: 200px;
            height: 100px;
            background: burlywood;
        }
        #right{
            background: red;
            height: 100px;
        }
    </style>
</head>
<body>
    <div>
            <div id="left"></div>
            <div id="right"></div>
            
    </div>
    
</body>
sc
</html>